1. RFID AC SWITCH Final Presentation November 25, 2008

2. Team Members Ricardo Calderon Electrical Engineering Team Leader Dimmer Function Debugging Website Jonathan Stanley Electrical Engineering Research and Documentation Soldering Parts on PCB Website Design Jerome Walker Computer Engineering Research and Documentation Eagle Schematic Design Website Design Corey Tate Electrical Engineering Research and Documentation Eagle Schematic Design

3. Overview Introduction Problem Solution Technical/Practical Constraints Testing Final Product Bill of Materials Questions

4. Introduction What is RFID? How can RFID technology be used? –Inventory Control –Personal Access

5. Problem There are no OEM RFID AC Switches available. Many people are unfamiliar with the capability RFID Technology.

6. Solution OEM RFID AC Switch This will give manufacturers a quicker time to market.

7. Implementations How can our OEM RFID AC Switch be implemented? Light Control Security Access Outlet Control

8. Technical Constraints NameDescription Switching VoltageMust operate at 120 VAC. Output CurrentMust have a maximum current of 15 amperes. Read DistanceMust have a read distance of at least 2”. Authorized Tag Identification Must read 125kHz tags. Tag QuantityMust store at least 200 identification tags.

9. Technical Constraints Results Switching Voltage Pass Output Current Pass Read Distance Pass Authorized Tag Identification Pass Tag Quantity Pass

10. Practical Constraints TypeNameDescription ManufacturabilitySizeMust have dimensions of at most 4” in length, 4” in width, and 2” in depth. Health and SafetySafetyMust meet UL (Underwriters Laboratories) guidelines.

11. Practical Constraints - Manufacturability Dimensions must be a maximum of 4”x4”x2” Solutions –AC/DC Converter –TRIAC –PCB Layout

12. Practical Constraints - Safety Must meet UL Guidelines Solutions –Non-conducive Enclosure –Isolated External Connections –Overcurrent Protection

13. Practical Constraints Results Dimensions (4”x4”x2”) Pass UL Guidelines Pass

14. Testing Format (Erase)- 0 0 0 0 Erase 1 Tag - 0 0 0 1 Write (Store)- 0 0 1 0 Read (Toggle) - 1 0 0 0 R (Timer 5s) - 1 0 0 1 R (Timer 10s)- 1 0 1 0 R (Dim Up/Down)- 1 1 0 0 R (Dim Up)- 1 1 0 1 R (Dim Down)- 1 1 1 0 R (Dim %)- 1 1 1 1

15. Test Plan Erase Mode Write Mode Read Mode

16. Erase Mode Erase Modes –Erase all stored tags –Erase 1 tag at a time –Output debug messages on Hyperterminal

17. Format/Erase Test

18. Erase 1 Tag Test

19. Write Mode –Store tag ID in memory –Same tag ID can only be stored once –Output debug messages on Hyperterminal

20. Write/Store Tag Test

21. Read Mode Read Modes –Toggle –Timer 5s/10s Timer –Dimmer DU, DD, DU&DD, DS

22. Toggle - Sunny Day Test

23. Toggle - Rainy Day Test

24. Timer 5s & 10s Test Timer 5s Test Timer 10s Test

25. Dimmer VDC Oscilloscope Green - Zero Crossing Yellow – Output 100%, 75% 50%, 25%, 0%

26. Dimmer VAC Oscilloscope Green - Zero Crossing Yellow – Output 100%, 75% 50%, 25%, 0%

27. SDI vs. SDII Senior Design ISenior Design II

28. Final Product No Need to house since product is OEM Size: 3.93”x3.15”x2” Read Range: 3”

29. Examples Input Output

30. Bill of Materials DeviceCost RFID Reader$34.95 AC/DC Converter$10.90 TRIAC Circuit$2.99 Microcontroller Circuit$9.55 Dimmer Chip$0.53 USB Input Circuit$15.96 Total Cost:$74.88

31. Questions Questions??